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H22A7 decompression plate anyone ran one ?
Posted: Tue Apr 02, 2019 6:38 pm
by louckie
As above anyone know how to calculate lower compression ratio with a thicker head gasket?
And if so what thickness plate Would I need
Anyone ran a doubled up oem gasket bla bla
Ermmmm asking for a mate

H22A7 decompression plate anyone ran one ?
Posted: Tue Apr 02, 2019 7:30 pm
by Drax
Surely doubling up on headgaskets will lower the compression... Why would you want to do that?
H22A7 decompression plate anyone ran one ?
Posted: Tue Apr 02, 2019 8:44 pm
by louckie
Drax wrote: ↑Tue Apr 02, 2019 7:30 pm
Surely doubling up on headgaskets will lower the compression... Why would you want to do that?
11:1 compression ratio is no good for boost

H22A7 decompression plate anyone ran one ?
Posted: Tue Apr 02, 2019 10:25 pm
by Drax
louckie wrote: ↑Tue Apr 02, 2019 8:44 pm
Drax wrote: ↑Tue Apr 02, 2019 7:30 pm
Surely doubling up on headgaskets will lower the compression... Why would you want to do that?
11:1 compression ratio is no good for boost
gotcha! Makes sense now
H22A7 decompression plate anyone ran one ?
Posted: Tue Apr 02, 2019 11:10 pm
by RattyMcClelland
11.1 is excellent for boost, well around 10.75 I think I'm at with the reworked head and thicker gasket. 11:1 arias pistons. Rich at paw did the calculations so no help to you.
H22A7 decompression plate anyone ran one ?
Posted: Wed Apr 03, 2019 8:35 pm
by louckie
RattyMcClelland wrote: ↑Tue Apr 02, 2019 11:10 pm
11.1 is excellent for boost, well around 10.75 I think I'm at with the reworked head and thicker gasket. 11:1 arias pistons. Rich at paw didn't he calculations so no help to you.
My mate said thanks
